Feahk a



(No Model.)

P. A. SMITH.

IUE MAKING AND REFRIGERATING MACHINE.

N0. 349,064. Patented Sept. 14, 1886.

N. FETKRS. PlwlwLiihngnpher. Washington. D. C.

A limitan STATES PATENT Ormea FRANK A. SMITH, OF STEELTON, PENNSYLVANIA.

ICE-MAKING ND REFRIGERATING `IVIACHINE.

SPECIFICATION forming part of Letters Patent No. 349,D64, datedSeptember 14, 1886.

Application filed March 27, 1886. Serial No. 196,761. (No model.)

To all whom z5 may concern:

Be it known that I, FRANK A. SMITH, a citizen of the United States,residing at Steelton,

in the county of Dauphin and State of Penn- Sylvania, have inventedcertain new and useful Improvements in Domestic Refrigerators andDevices for the Manufacture of Ice, of

which the following is a full, clear, and exact description, referencebeing had to the accompanying drawings, making apart of thisspecication.

My invention relates to improvements in domestic refrigerators, and todevices for the manufacture of ice.4

The object of my invention is to provide a cheap and reliable device forrefrigerating purposes for domestic and other uses, by which thearticles contained in the refrigerator are preserved, fresh waterreduced to the proper temperature for drinking purposes, and at the sametime the temperature in some one of the compartments reduced tothe'ice-forming or freezing point.

My invention consists in passing the freezing-mixture, after it hasperformed its work in cooling the drinking-water and in the productionof ice, through a coil of pipes arranged within the preserving-chamberofthe refri gerator, whereby allthc units of cold are utilized.

My invention consists, further, in certain details of construction,which will bc fully described hereinafter, and pointed out in theclaims.

Referring to the drawings, Figure I is avertical sectional view ot' myimproved'apparatus.

Fig. 2 is a horizontal sectional view on the line a: fr, Fig. I.

A indicates the main body of the refrigerator, which is composed of' anouter wall, B, and an inner wall, C, with an intervening space betweenthe two walls, which is filled with anysuitable non-conducting packingmaterial, D, as is common in the construction of refrigerators.

The interior of the refrigerator is divided into upper and lowercompartments, E' and F, respectively, by the horizontal partition G, thelower portion or1 compartment, F, being provided with a door andshelves, and used as a 5o storage-chamber for meats, fruits, vegetables,r Snc., while the upper compartment, E, is used T for containing thedevices and chemicals which produce the cold or rcdupcd temperature.

H and I are recesses or tanks located in the compartment or chamber Il,and made of any suitable material, but, bypreference, of a metal whichwill not be affected by the chemicals or salts they are intended tocontain for producing the reduced temperature. The vessel H is designedto be used as the freezing or iceforming vessel, and is provided withsuitable cans K, for holding the pure fresh water, which is to be formedinto ice, said cans being provided with fianges a, adapted to rest onthe edges of recesses formed in the oat b, by which means the cans K areheld in position in the freezing-mixture, M, contained in the vessel H.

`The float is provided with a central aperture,

through which the guide-rod a is passed, the lower end of said guide-rodbeing secured to the bottom of the vessel H, andby which means the cansK and float Bl are held in position, and are free to slide up and downon the guiderod.

N is a fresh-water tank located in the bottom of the vessel I, and isprovided with a drain pipe, O, and stop cock P, through which the cooledwater is drawn for drinking and other purposes, said tank bcingprovidedwith a f resh-water-supply pi pc, R, which leads to and connects witha-hydrant or other convenient water-supply.

S is a pipe leading from the bottom or lower portion of the freshwatertank N, and ex` tends up to near the top of the vessel I, and is leddown again by a return-bend to the bottom of the tank I, where it is ledthrough the walls 'thereof into the lower portion of the vessel H. Thepipe S at the top of the bent portion is provided wit-l1 a stop-cock orregulating-valve, T, by which the supply of fresh water to the tank H isregulated.

V is an overflow or equalizing pipe leading from the freezing-vessel Hto the cooling-vessel I, one end of which extends down into the vesselI, so as to discharge the cold solution from the freezingvessel H intothe cooling-vessel I, near the bottom thereof, and thus utilize the lowtemperature of the solution coming through it in cooling the water inthe tank N and pipe S.

V is an overiiowxpipe, which enters the the overflow from thefreezing-tank H. \Vhen ator to a suitable receptacle, from whence thesolution is taken to a suitable evaporating apparatus, where the saltsare recovered for further use.

In practical operation the vessels II and I are charged with the properamount of the cooling or refrigerating salts, preferably nitrate ofammonia, and the valve T opened, so as to supply the vessel II with theproper amount of water to dissolve the salts, the force of the waterwhich enters the vessel H under pressure being sufficient to agitate thesalt, thus dispensing with any mechanical devices or means for stirringor agitating the salts. Vhen the vessel I-I has filled, the overflowpasses out through the pipe V into the vessel. I, where theeoolingliquid is utilized to reduce the temperature of the water in thevessel N and pipe S, and in this way the initial cooling of the freshwater is accomplished by the solution or overflow from the tank II hasreached a certain height in the tank I, the surplus or overiiow iscarried off through the pipe W and conducted through the coil of pipe inthe compartment F, and reduces the temperature of the same. By bringingthe pipe XV into the refrigerating or preserving chamber F near Ithe topthereof the cooling liquid in its passage therethrough gives off itsgreatest cold in the top of said chamber, the cold air settling downyinto the chamber F and keeping the articles therein contained at theproper preserving temperature.

As a further means of utilizing all of the cold from the vessels H andI, openings are formed in the partition G, directly underneath thevessels or tanks, so that the eold air or refrigerating-eurrents thrownoff from the bottom of said vessels will enter the chamber F.

Instead of having a solid partition, G, I may form the same of a seriesof slats, or I may secure and support the tanks Hand I y in any suitablemanner at their tops to the easing of the refrigerator, and thusdispense entirely with the partition, and allow all of the cold-aircurrents coming from the tanks H and I to settle down into the chamberF; and instead of ceiling the pipes A around the sides of the chamber F,I may find it convenient and desirable to simply coil the same in thetop thereof, and by this means utilize all the units of cold. By closingor partly closing the valve T the water is retained in the pipe S andtank N, and cooled to any desired temperature before it is introducedinto the freezing-tub, and by opening the valve ,l fully the salts arestirred or agitated in the tank H to any desired extent by the force ofthe current of water.

After the first filling of the tanks or vessels H and I with salts, andwhen the cooling or freezing operation is fairly under way, thefreezing-tub II only is replenished with the salts, the overliow of thecold liquid from this vessel into the vessel I being sufficient l toaccomplish the initial cooling of the fresh water in the tank N and coilS.

I am aware that it is not new to eool a body of water by the addition ofa salt thereto, bringing this body of cooled water into contact with thewalls of another vessel eontaining pure water, and thereby reducing thetemperature of the pure water almost to the temperature of the watercontaining the salt, then dissolving salt in the pure water previouslycooled, and thus reducing its temperature,'by which operation ice can beformed in a vessel immersed in the second body of water, and whichvessel and its contained water are subjected tothe cooling due to thedissolving of the cooling agent in the first as well as the secondvessel, and such l do not claim.

Having thus described my invention, what I claim is- In a refrigeratorfor domestic uses and other purposes, the combination of two tanks orvessels filled with a solution ofnitrate-of ammonia salt, a pipeconnecting said tanks for carrying the overflow from the freezing to thecooling tank or vessel and discharging said solution near the bottom ofsaid eool ing-tank, a fresh-watersupply pipe leading from a fresh-watertank located in the cooling-tank to the bottom of the freezing-tank,anda regulating-valve located in the freshwatersupply pipe, to regulatethe flow of water into the freezingtank, whereby the fresh water iscooled before it comes in contact with the freezing mixture, and thesolution is agitated or mixed in the freezingtank by the force of theincoming wafer, as set forth.

2. In a refrigerator for domestic and other uses, the guide-rod a,secured in the bottom of the freezing-tank, in combination with thefloating disk l1 and cans K, whereby the cans are held in position inthe freezing-solution, as set forth.

8. In a refrigerator for domestic and olher uses, the eombinatiofi ofthetwo tanks IlV and I, placed close together and connected by means of theoverflow-pipe 'V with the freshwater tank located in the cooling-tankil', and connected to the freezing-tank ll by means ol the pipe S, andthe valve rl,for.controlling the admission of the fresh water to thefreezingtank, as set forth.

4. In a refrigerator for domestic purposes and other uses, thecombination ol' the devices, substantially such as described, for thecontinuousproduction of cold, with the overfiow-pipe XV and coil AQloeatedin the preservingehamber of the refrigerator, whereby all theunits of cold are utilized, as set forth.

In testimony whereof I have hereunto set my hand this 25th day of March,A. I). 1886.

F IANK A. SMITH.

litnessesr l. H. Boven, W. C. MURDooK.

lOO

